diplodocus.org Git - nmh/blob - uip/rcvdist.c

   1
   2 /*
   3  * rcvdist.c -- asynchronously redistribute messages
   4  *
   5  * $Id$
   6  *
   7  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   8  * COPYRIGHT file in the root directory of the nmh distribution for
   9  * complete copyright information.
  10  */
  11
  12 #include <h/mh.h>
  13 #include <h/fmt_scan.h>
  14 #include <h/rcvmail.h>
  15 #include <h/tws.h>
  16 #include <h/mts.h>
  17 #include <h/utils.h>
  18
  19 static struct swit switches[] = {
  20 #define FORMSW       0
  21     { "form formfile",  4 },
  22 #define VERSIONSW    1
  23     { "version", 0 },
  24 #define HELPSW       2
  25     { "help", 0 },
  26     { NULL, 0 }
  27 };
  28
  29 static char backup[BUFSIZ] = "";
  30 static char drft[BUFSIZ] = "";
  31 static char tmpfil[BUFSIZ] = "";
  32
  33 /*
  34  * prototypes
  35  */
  36 static void rcvdistout (FILE *, char *, char *);
  37 static void unlink_done (int);
  38
  39
  40 int
  41 main (int argc, char **argv)
  42 {
  43     pid_t child_id;
  44     int i, vecp = 1;
  45     char *addrs = NULL, *cp, *form = NULL, buf[BUFSIZ];
  46     char **argp, **arguments, *vec[MAXARGS];
  47     register FILE *fp;
  48
  49     done=unlink_done;
  50
  51 #ifdef LOCALE
  52     setlocale(LC_ALL, "");
  53 #endif
  54     invo_name = r1bindex (argv[0], '/');
  55
  56     /* read user profile/context */
  57     context_read();
  58
  59     mts_init (invo_name);
  60     arguments = getarguments (invo_name, argc, argv, 1);
  61     argp = arguments;
  62
  63     while ((cp = *argp++)) {
  64         if (*cp == '-') {
  65             switch (smatch (++cp, switches)) {
  66                 case AMBIGSW:
  67                     ambigsw (cp, switches);
  68                     done (1);
  69                 case UNKWNSW:
  70                     vec[vecp++] = --cp;
  71                     continue;
  72
  73                 case HELPSW:
  74                     snprintf (buf, sizeof(buf),
  75                         "%s [switches] [switches for postproc] address ...",
  76                         invo_name);
  77                     print_help (buf, switches, 1);
  78                     done (1);
  79                 case VERSIONSW:
  80                     print_version(invo_name);
  81                     done (1);
  82
  83                 case FORMSW:
  84                     if (!(form = *argp++) || *form == '-')
  85                         adios (NULL, "missing argument to %s", argp[-2]);
  86                     continue;
  87             }
  88         }
  89         addrs = addrs ? add (cp, add (", ", addrs)) : getcpy (cp);
  90     }
  91
  92     if (addrs == NULL)
  93         adios (NULL, "usage: %s [switches] [switches for postproc] address ...",
  94             invo_name);
  95
  96     umask (~m_gmprot ());
  97     strncpy (tmpfil, m_tmpfil (invo_name), sizeof(tmpfil));
  98     if ((fp = fopen (tmpfil, "w+")) == NULL)
  99         adios (tmpfil, "unable to create");
 100     cpydata (fileno (stdin), fileno (fp), "message", tmpfil);
 101     fseek (fp, 0L, SEEK_SET);
 102     strncpy (drft, m_tmpfil (invo_name), sizeof(drft));
 103     rcvdistout (fp, form, addrs);
 104     fclose (fp);
 105
 106     if (distout (drft, tmpfil, backup) == NOTOK)
 107         done (1);
 108
 109     vec[0] = r1bindex (postproc, '/');
 110     vec[vecp++] = "-dist";
 111     vec[vecp++] = drft;
 112     vec[vecp] = NULL;
 113
 114     for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
 115         sleep (5);
 116     switch (child_id) {
 117         case NOTOK:
 118             admonish (NULL, "unable to fork");/* fall */
 119         case OK:
 120             execvp (postproc, vec);
 121             fprintf (stderr, "unable to exec ");
 122             perror (postproc);
 123             _exit (1);
 124
 125         default:
 126             done (pidXwait(child_id, postproc));
 127     }
 128
 129     return 0;  /* dead code to satisfy the compiler */
 130 }
 131
 132 /* very similar to routine in replsbr.c */
 133
 134 #define SBUFSIZ 256
 135
 136 static int outputlinelen = OUTPUTLINELEN;
 137
 138 static struct format *fmt;
 139
 140 static int ncomps = 0;
 141 static char **compbuffers = 0;
 142 static struct comp **used_buf = 0;
 143
 144 static int dat[5];
 145
 146 static char *addrcomps[] = {
 147     "from",
 148     "sender",
 149     "reply-to",
 150     "to",
 151     "cc",
 152     "bcc",
 153     "resent-from",
 154     "resent-sender",
 155     "resent-reply-to",
 156     "resent-to",
 157     "resent-cc",
 158     "resent-bcc",
 159     NULL
 160 };
 161
 162
 163 static void
 164 rcvdistout (FILE *inb, char *form, char *addrs)
 165 {
 166     register int char_read = 0, format_len, i, state;
 167     register char *tmpbuf, **nxtbuf, **ap;
 168     char *cp, *scanl, name[NAMESZ];
 169     register struct comp *cptr, **savecomp;
 170     FILE *out;
 171
 172     if (!(out = fopen (drft, "w")))
 173         adios (drft, "unable to create");
 174
 175     /* get new format string */
 176     cp = new_fs (form ? form : rcvdistcomps, NULL, NULL);
 177     format_len = strlen (cp);
 178     ncomps = fmt_compile (cp, &fmt) + 1;
 179     if (!(nxtbuf = compbuffers = (char **) calloc ((size_t) ncomps, sizeof(char *))))
 180         adios (NULL, "unable to allocate component buffers");
 181     if (!(savecomp = used_buf = (struct comp **) calloc ((size_t) (ncomps + 1), sizeof(struct comp *))))
 182         adios (NULL, "unable to allocate component buffer stack");
 183     savecomp += ncomps + 1;
 184     *--savecomp = 0;
 185
 186     for (i = ncomps; i--;)
 187         *nxtbuf++ = mh_xmalloc (SBUFSIZ);
 188     nxtbuf = compbuffers;
 189     tmpbuf = *nxtbuf++;
 190
 191     for (ap = addrcomps; *ap; ap++) {
 192         FINDCOMP (cptr, *ap);
 193         if (cptr)
 194             cptr->c_type |= CT_ADDR;
 195     }
 196
 197     FINDCOMP (cptr, "addresses");
 198     if (cptr)
 199         cptr->c_text = addrs;
 200
 201     for (state = FLD;;) {
 202         switch (state = m_getfld (state, name, tmpbuf, SBUFSIZ, inb)) {
 203             case FLD:
 204             case FLDPLUS:
 205                 if ((cptr = wantcomp[CHASH (name)]))
 206                     do {
 207                         if (!mh_strcasecmp (name, cptr->c_name)) {
 208                             char_read += msg_count;
 209                             if (!cptr->c_text) {
 210                                 cptr->c_text = tmpbuf;
 211                                 *--savecomp = cptr;
 212                                 tmpbuf = *nxtbuf++;
 213                             }
 214                             else {
 215                                 i = strlen (cp = cptr->c_text) - 1;
 216                                 if (cp[i] == '\n') {
 217                                     if (cptr->c_type & CT_ADDR) {
 218                                         cp[i] = 0;
 219                                         cp = add (",\n\t", cp);
 220                                     }
 221                                     else
 222                                         cp = add ("\t", cp);
 223                                 }
 224                                 cptr->c_text = add (tmpbuf, cp);
 225                             }
 226                             while (state == FLDPLUS) {
 227                                 state = m_getfld (state, name, tmpbuf,
 228                                                   SBUFSIZ, inb);
 229                                 cptr->c_text = add (tmpbuf, cptr->c_text);
 230                                 char_read += msg_count;
 231                             }
 232                             break;
 233                         }
 234                     } while ((cptr = cptr->c_next));
 235
 236                 while (state == FLDPLUS)
 237                     state = m_getfld (state, name, tmpbuf, SBUFSIZ, inb);
 238                 break;
 239
 240             case LENERR:
 241             case FMTERR:
 242             case BODY:
 243             case FILEEOF:
 244                 goto finished;
 245
 246             default:
 247                 adios (NULL, "m_getfld() returned %d", state);
 248         }
 249     }
 250 finished: ;
 251
 252     i = format_len + char_read + 256;
 253     scanl = mh_xmalloc ((size_t) i + 2);
 254     dat[0] = dat[1] = dat[2] = dat[4] = 0;
 255     dat[3] = outputlinelen;
 256     fmt_scan (fmt, scanl, i, dat);
 257     fputs (scanl, out);
 258
 259     if (ferror (out))
 260         adios (drft, "error writing");
 261     fclose (out);
 262
 263     free (scanl);
 264     for (nxtbuf = compbuffers, i = ncomps; (cptr = *savecomp++); nxtbuf++, i--)
 265         free (cptr->c_text);
 266     while (i-- > 0)
 267         free (*nxtbuf++);
 268     free ((char *) compbuffers);
 269     free ((char *) used_buf);
 270 }
 271
 272
 273 static void
 274 unlink_done (int status)
 275 {
 276     if (backup[0])
 277         unlink (backup);
 278     if (drft[0])
 279         unlink (drft);
 280     if (tmpfil[0])
 281         unlink (tmpfil);
 282
 283     exit (status ? RCV_MBX : RCV_MOK);
 284 }